Parallel Virtual Machine (PVM) and Message Passing Interface (MPI) are the most frequently used tools for programming according to the message passing paradigm, which is considered one of the best ways to develop para...
详细信息
ISBN:
(数字)9783540481584
ISBN:
(纸本)9783540665496
Parallel Virtual Machine (PVM) and Message Passing Interface (MPI) are the most frequently used tools for programming according to the message passing paradigm, which is considered one of the best ways to develop parallel applications. This volume comprises 67 revised contributions presented at the Sixth European PVM/MPI Users' Group Meeting, which was held in Barcelona, Spain, 26-29 September 1999. The conference was organized by the computer Science Department of the Universitat Autònoma de Barcelona. This conference has been previously held in Liverpool, UK (1998) and Cracow, Poland (1997). The first three conferences were devoted to PVM and were held at the TU Munich, Germany (1996), ENS Lyon, France (1995), and University of Rome (1994). This conference has become a forum for users and developers of PVM, MPI, and other message passing environments. Interaction between those groups has proved to be very useful for developing new ideas in parallel computing and for applying some of those already existent to new practical fields.
We present and evaluate the ExaNeSt Prototype, which compactly packages 128 Xilinx ZU9EG MPSoCs, 2 TBytes of DRAM, and 8 TBytes of SSD into a liquid-cooled rack, using a custom interconnection hardware based on 10 Gbp...
详细信息
We present and evaluate the ExaNeSt Prototype, which compactly packages 128 Xilinx ZU9EG MPSoCs, 2 TBytes of DRAM, and 8 TBytes of SSD into a liquid-cooled rack, using a custom interconnection hardware based on 10 Gbps links. We developed this testbed in 2016-2019 in order to leverage the flexibility of FPGAs for experimenting with efficient hardware support for HPC communication among tens of thousands of processors and accelerators in the quest towards Exascale systems and beyond. In the years since then, we carefully studied this system, and we present our key design choices and insights resulting from our measurement and *** developed this testbed, from architecture to the PCBs and the runtime software, within the ExaNeSt project. It is fully operational in configurations with up to 8x4x4 MPSoC nodes. It achieves high density through tight board design, while also leveraging state-of-the-art liquid cooling technology. In this paper, we present a thorough architectural analysis, along with important aspects of our infrastructure development. Our custom interconnect includes a low-cost low-latency network interface, offering user-level, zero-copy RDMA, which we coupled with the ARMv8 processors in the MPSoCs. We further developed the corresponding runtimes that allow us to test real MPI applications on the large-scale *** evaluated our platform through MPI microbenchmarks, mini, and full MPI applications. Single hop, one way latency is \(1.3\) \(\mu\)s; approximately \(0.47\) \(\mu\)s out of these are attributed to network interface and the user-space library that exposes its functionality to the runtime. Latency over longer paths increases as expected, reaching \(2.55\) \(\mu\)s for a five-hop path. Bandwidth tests show that, for single hop, link utilization reaches \(82\%\) of the theoretical capacity. Microbenchmarks based on MPI collectives reveal that broadcast latency scales as expected when the number of participating ranks increases. We also
After two decades, data processing has finally, and probably forever, found its niche among civil engineering and construction (CEC) professionnals, through word processors, digitizing tables, management software, and...
详细信息
ISBN:
(数字)9781468474046
ISBN:
(纸本)9781850912538
After two decades, data processing has finally, and probably forever, found its niche among civil engineering and construction (CEC) professionnals, through word processors, digitizing tables, management software, and increasingly via drawing software and computer-aided design (CAD), recently, robots have even started invading work sites. What are the main trends of CAD and robotics in the field of architecture and civil enginee ring? What type of R&D effort do university and industrial laboratories undertake to devise the professional software that will be on the market in the next three to five years? These are the issues which will be addressed during this symposium. To this effect, we have planned concurrently an equipment and software show, as well as a twofold conference. Robotic is just starting in the field of civil engineering and construction. A pioneer, the Civil Engineering Departement of Carnegie-Mellon University, in the United States, organized the first two international symposia, in 1984 and 1985 in Pittsburgh. This is the third meeting on the subject (this year, however, we have also included CAD). It constitutes the first large international symposium where CAD experts, specialists in architecture and CEC robotics will meet. From this standpoint, it should be an ideal forum for exchanging views and expe riences on a wide range of topics, and we hope it will give rise to novel applications and new syntheses. This symposium is intented for scientists, teachers, students and also for manufacturers and all CEC professionals.
暂无评论